国产精品三级三级三级丨波多野结衣人妻丨免费看午夜福利专区丨亚洲区另类春色综合小说丨黄色网址在线免费看丨日本欧美亚洲中文在线观看丨久久国产欧美日韩精品丨久久精品这里热有精品丨人妻少妇精品专区性色av丨jizz欧洲丨夜夜爽8888丨深夜福利91丨成人在线视频网丨先锋av资源在线丨最新国产在线拍揄自揄视频丨久草在线青青草丨国产黄色片免费丨国产成人麻豆精品午夜福利在线丨亚洲欧洲日产国码av老年人丨国产一区二区三区av网站丨无码日韩av一区二区三区丨丰满岳乱妇在线观看视频国产丨成人深夜视频丨成人av专区丨欧美v视频

Cylindrical Roller Bearings
Product Name: Cylindrical Roller Bearing
Product No:NU200
Product Description: Main uses: Large and medium-sized motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, and lifting and transportation machinery.
details:
 

Cylindrical roller bearing
The rolling element is a radial rolling bearing of a cylindrical roller.
Cylindrical Roller Bearings
Cylindrical rollers and raceways are line contact bearings. Load capacity, mainly bear radial load. The rolling element has little friction with the ferrule rib and is suitable for high speed rotation. According to the ferrule with or without ribs, it can be divided into single row bearings such as NU, NJ, NUP, N, NF, and double row bearings such as NNU and NN. The bearing is a structure in which the inner ring and the outer ring are separable. Cylindrical roller bearings with no ribs on the inner or outer ring, the inner and outer rings can move relative to the axial direction, so they can be used as free end bearings. A cylindrical roller bearing with a single rib on one side of the inner and outer rings and a single rib on the other side can withstand a certain degree of axial load in one direction. Steel stamping cages or copper alloy cages are generally used. However, some use polyamide shaped cages.
Cylindrical roller bearing features:
1. The roller and the raceway are in contact with the wire or repaired, and have a large radial load capacity, which is suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limit speed is close to the deep groove ball bearing.
3. N-type and NU-type can move axially, can adapt to the change of the relative position of the shaft and the shell caused by thermal expansion or installation error, and can be used as free end support.
4. The machining requirements of the shaft or the seat hole are high. After the bearing is installed, the relative deflection of the outer ring axis should be strictly controlled to avoid contact stress concentration.
5. The inner or outer ring can be separated for easy installation and removal.
The main purpose:
Large and medium-sized motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gearboxes, rolling mills, vibrating screens, and lifting and transporting machinery.